Improvement in the manufacture of stamped ware



UNITED STATES ATENT OFFICE.

G. H. HAZELTON, OF PHILADELPHIA, PENNSYLVANIA.

Specification forming part of Letters Patent No. 44,308, dated September 20, 1864.

To all whom it may concern Be it known that I, G. H. HAZELTON, of

-Philadelphia, in the count-y of Philadelphia antimony, or of lead and tin, whereby such articles are greatly improved in strength and durability.

In the manufacture of stamped ware made of tinned iron (commonly called tin-plate) the coating is partially removed and the iron strained, leaving the pores of the iron open and exposed to the action of oxidizing agents, thus greatly impairing the durability of such articles.

To remedy the injury done the tin-plate during the process of stamping is the object of my invention.

To enable others skilled in the art to which my invention relates to carry it into practice, I will proceed to describe it.

The article of stamped ware is made into the required form by pressing between dies, or stamped. in the manner usual and understood by persons engaged in the manufacture of such ware. It is then to be coated by means of a metallic bath prepared in the way iron is usually tinned, or coated with alloys of tin, with an alloy of lead, tin, and antimony, or with an alloy of lead and tin,which fills up any rents, abrasions, or fissures which may have been caused by the operation of stamping, and at the same time gives the article a uniform and durable surface. The alloy to be used for this coating will vary according to the'purpose for which the ware is intended.

For articles which require to be made strong and capable of resisting the corrosive action of soaps, alkalies, and acids-such as the bottoms of wash-boilersI use an alloy composed of fifty-eight parts of lead, (What is commonly called tea-lead is preferred,) thirty-seven parts of tin, and five parts of antimony. When hardness is not required the antimony may be omitted and an equal quantity of tin substituted for it.

For coating articles to be used for culinary purposes-such as the bottoms of tea-kettles, saucepans, &c.the proportion of tin should be increased. An alloy for this purpose may bemade of lead, twenty-six (26) parts tin, seventy-four (7 4) parts but these proportions and those first above mentioned may be varied.

I find it convenient in practice to prepare the different alloys required for coating the several kinds of ware I wish to manufacture and run them into ingots, ready for use.

The bottoms of wash-boilers, tea-kettles, and the like prepared by the above-described process are easily soldered to ordinary tin tops, and the joint is durable.

I do not claim as my invention makingalloys of lead with tin and antimony, nor do I claim coating tin-plate with such alloys; but

What I do claim, and desire to secure by Letters Patent of the United States, is-- Coating stamped ware made of tinned iron, substantially as and for the purpose herein set forth and described.

G. H. HAZELTON.

Witnesses:

JOHN S. HOLLINGSHEAD, JOHN D. BLOOR- 

